OBD
P0441
Evaporative Emission System Incorrect Purge Flow
What it means
P0441 means Evaporative Emission System Incorrect Purge Flow.
Check these first
- Faulty purge valve stuck open or closed
- Blocked purge line or canister
- Failed vent valve
- Incorrect vacuum to the purge system
What to do next
- Command the purge valve and watch vapor pressure change
- Check the purge line for kinks or blockage
- Smoke-test the system for leaks
- Test the purge and vent valve operation
- Replace the faulty valve and run an EVAP monitor test
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Updated
Generic SAE J2012 definition. Last updated 2026-08-30.